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Finding the Fourth Proportional to 570,269.45, 787,147.11 and 328,713.48

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Solution

The fourth proportional to 570,269.45, 787,147.11 and 328,713.48 is: 453,725.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,269.45 : 787,147.11 = 328,713.48 : x
  2. Step 2: Convert to fraction form
    570,269.45/787,147.11 = 328,713.48/x
  3. Step 3: Cross multiply
    570,269.45x = 787,147.11 × 328,713.48
  4. Step 4: Simplify right side
    570,269.45x = 258,745,865,800.04
  5. Step 5: Solve for x
    x = 258,745,865,800.04/570,269.45
  6. Step 6: Final answer
    x = 453,725.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.